9 pcs universal angle block set 1/2 to 30 degree

9 pcs universal angle block set 1/2 to 30 degree 9 pcs angle blocks set accurate angles quickly. Just load on vise and rest the workpiece at any angle you choose. Made of high quality hardened steel. Precision ground. HARDNESS: HRC50 TO 55 1/2 degree to 30 degree. Accuracy: 0.0003" Tolerance: +/- 10 seconds Including the following degrees of angle block: 1/2, 1, 2, 3, 4, 5 degree angle blocks (2-3/4x1-3/16 size) 10, 15, 30 degree master blocks (3 x 1-3/16 x 1-3/16 size) Any conveivable angles to these increments can be established. Lightly magnetized for better holding. Fitted in deluxe wooden box.